As shown in Fig. 10A, the expression of CLEC2B was significantly associated with the abundance of infiltrating immune cells using TIMER method: B cells in 24 types of cancer, CD4+ T cells in 29 types of cancer, CD8+ T cells in 30 types of cancer, neutrophils in 34 types of cancer, macrophages in 33 types of cancer, and DCs in 33 types of cancer. This evidence concerns the gene CD4 and cancer.